Radiator for internal-combustion engines



Nov. 27, 1923.

-- S. J. MATTHEWS mnwron FOR INTERNAL COMBUSTION ENGINES Original Filed Feb. 19

v Patented New. 2'7, 1923. j v

:UNITEE I rasses Parent car es-"1 SCOTT J. MATTHEWS, OF PORT CLINTON, OHIO, ASSIGNOR TO GEORGE A. TRUE,

TRUSTEE, OE PORT CLINTON, OHIO.

RADIATOR FOR INTERNAL-COMBUSTION ENGINES.

Application filed February 19,1919, Serial No. 277,890. RenewedSepteniber 20, 1922. Serial No. 589,488.

To all whom it may concern:

Be it known that I, SooTT J. MATTHEWS, citizen of the United States, residing at- Port Clinton, in the county of Ottawa and State of Ohio, have invented certain new and useful Improvements in Radiators for Internal-Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention,

such as will enable others skilled in the artto which it a-ppertains to make and use the same.

I This invention has for its object to provide new and useful improvements in means for cooling the water of water-jacketed internal combustion engines and the like and has for its particular object to provide simple, cheap and efficient heat radiating means particularly adapted for stationary engines of this type.

The invention consists in features of construction and combinations of parts hereinafter fully described and particularly claimed. 2

In the accompanying drawings illustrating a suitable embodiment of the invention:

Figure 1 is a view in central vertical longitudinal section of a cooler or heating radiator constructed in accordance with the invention.

Figure 2 is a fragmentary detail section of the same on the line 22 of Figure 1. Internal combustion engines, as is well known, operate most efiiciently when the cylinders are comparatively hot, that is, so that the temperature of the walls thereof approximates 225 F. Overheating of cylinder Walls must, of course, be avoided, in order to permitof proper lubrication and to prevent the lubricating oil from burning out.

To maintain the cylinders at a suiiiciently low temperature water jackets are. usually employed and in connection with the same radiators of relatively expensive construction have been generally used. The object of my present invention is to provide a cheap and eflicient radiator for waterjacketed internal combustion engines which becomes eifective only when the temperature of the cylinders has attained such a degree as to cause the water in the water jackets surrounding the same to boil. In my invention, I take advantage of the wellknown principle of the percolator most commonly embodied in coffee pots and to this end, I provide a water tank 1 connected by means of a relatively large pipe 2 with the upper end of the water jacket 3301": an internal combustion engine. The pipe '2 leads from the bottom of the tank 1, the

water, thus maintaining the water-jacket 3 full of water under a slight pressure and providing an adequate supply .to replace such water as is lost either by evaporation or leakage.

Passing centrally through the tank 1 is a pipe 6 of smaller diameter than the pipe 2 with which it is concentric and into which it projects to a point contiguous to the lower end of said pipe. It is maintained concentric with the pipe 2 and is supported therein by means of a spider 7 of well-known construction. The pipe 6 projects through the center of the cover plate 4 of the tank 1 and at its upper endenters what may be termed a distributing nozzle 8 upon which the conical top plate 9 of a water receiving hood is mounted. The water projected from the pipe 6 into the nozzle 8 is projected from the perforations 10 insaid nozzle upon the lower face ofthe plate 9. An inverted conical plate 11 is suitably joined at its circumferential edge with-the circumhe tank 1 is I ferential edge of theplate 9 and a water tight joint between said parts efiected. The plate 11 is provided. with central opening of aslightly larger diameter than the outer diameter of the pipe 6 so that water flowing from the plate 9 upon. the plate 11 will pass from said opening 12 upon the center portion of the cover plate 4 of the tank and over the'same through the slots or perforations 5 into the said tank. I The operation of the device is very simple in that as the water in the water jacket boils and steam is generated, thelatter will rise to the top of the water jacket. It will be noted that the pipe 2 is threaded into a boss 12 which projects downwardly into the water jacket andthus provides a space for the accumulation of generated steam which, when it exceeds normal volume, passes into the pipes 2 and 6 and forces water upwardly through the same, particularly through the pipe 6 into the hood through the nozzle 10, whence it will. flow in a a zig-zag course back to the tank 1. During said zig-zag flow 1t will radiate heat,

thus maintaining the water at about the boiling point. The steam passing upwardlythrough the pipes 2 and 6 will be condensed during passage and the water of condensation will return to the tank 1 for reuse.

While I have shown a suitable embodiment of the invention in the accompanying drawings, it will be obvious, of course, that such embodiment may be changed and varied in details without departing from the invention as defined in the appended claims.

I claim as my invention: 7

1'. The combination with the water-jacketof an internal combustion engine, of a receptacle disposed above the same and communicat-ing therewith and adapted to be partially filled with water, a pipe extending from substantially the highest point in said water jacket to a point above the top of the receptacle, and a plurality of surfaces over which water ejected from the upper end of said pipe is adapted to flow successively into said receptacle, said surfaces arranged to cause the water to flow in a Zig-zag course to radiate heat absorbed from the engine.

2. The combination with the water-jacket of an internal combustion motor, of water cooling means comprising a receptacle disposed above the water-jacket and communicating therewith. and adapted to be par tially filled with water, a vertical pipe communicating with the water jacket at the highest point in the same, a hood supported upon the upper end of said pipe, means whereby water forced upwardly through said pipe will be projected upon said hood and flow. to the peripheral edge thereof, an inverted hood arranged toreceive said water from the periphery o1 the first-named hood and cause the same to flow in the opposite direction, and means for conducting the water from thelast-namedhood into said receptacle.

3. A cooling system for internal combustion engines comprising a tank having an open top, a supply-connection between the tank and the'water-jacket of an engine, a return connection through which the water will be forced by the pressure off the water in the jacket, and a condenser to receive fluid from the return connection and deliver it into an open air space above the top of the tank whereby partial cooling of the fluid is effected as it falls from the condenser through the open airspace into thetank.

4:. A cooling system, for internal combustionengines, comprising a tank having an open top, a'supply-connection between the tank and the water-jacket of an engine, a return connection through which the water will be forced by the pressure of the water in the jacket, extending through the tank, and a condenser to receive fluid from the return connection and deliver it into an open air space above the top of the tank whereby partial cooling of the fluid is effected as it falls from the condenser through the open airspace into the tank.

5. A cooling system for internal combustion engines comprising a tank having an open top, a supply-connection between the tank and the water-jacket of an engine, a return-connection through which the water will be forced by the pressure of the water in the jacket, and a condenserhead mounted upon and above the open top of the tank to receive fluid trom'the return connection and deliver it into an open air space above the top of the tank whereby partial cooling of the fluid is efi'ected asit falls from the condenser through the open air space into the tank.

6. A cooling system for internal combustion engines comprising a. tank having an open top, a supply-commotion between the tank and the water jacket of an engine, a return-connection through which the water will be forced by the pressure of the water in the jacket, a spray-pipe on the return-connection and a condenser-head above the tank to receive fluid from the spray-pipe having an .open bottom to deliver the water into the tank.

7. A cooling system for internalcombustion engines comprising a tank having an open top, a supply-connection between the tank and the water-jacket of an engine, a return-connection through which the water will be forced by the pressure of the water in the jacket extending through the tank,-a

spray-pipe on the return-connection, a'con denser head having a closed top and side and an inwardly extending flange to receive fluid from the spray-pipe and discharge water into the tank. 1

soorr J. MAT'rHEws. 

